Local and nonlocal entanglement for quasiparticle pairs induced by Andreev reflection
arXiv:cond-mat/0608469 · doi:10.1103/PhysRevB.74.085312
Abstract
We investigate local and nonlocal entanglement of particle pairs induced by direct and crossed Andreev reflections at the interfaces between a superconductor and two normal conductors. It is shown theoretically that both local and nonlocal entanglement can be quantified by concurrence and detected from the violation of a Bell inequality of spin current correlators, which are determined only by normal reflection and Andreev reflection eigenvalues. There exists a one-to-one correspondence between the concurrence and the maximal Bell-CHSH parameter in the tunneling limit.
References in corpus (19)
- Entanglement of Formation of an Arbitrary State of Two Qubits
- Shot Noise in Mesoscopic Conductors
- Random-Matrix Theory of Quantum Transport
- Violation of Bell's inequality under strict Einstein locality conditions
- Violation of Bell inequalities by photons more than 10 km apart
- Andreev-Tunneling, Coulomb Blockade, and Resonant Transport of Non-Local Spin-Entangled Electrons
- Evidence for crossed Andreev reflection in superconductor-ferromagnet hybrid structures
- Electronic Entanglement in the Vicinity of a Superconductor
- Experimental observation of bias-dependent non-local Andreev reflection
- Noise of Entangled Electrons: Bunching and Antibunching
- Orbital entanglement and violation of Bell inequalities in mesoscopic conductors
- Bell inequalities and entanglement in solid state devices
- Production and detection of entangled electron-hole pairs in a degenerate electron gas
- Quantum entanglement in carbon nanotubes
- Electron Entanglement via a Quantum Dot
- Impurity Scattering Induced Entanglement of Ballistic Electrons
- Detecting entanglement using a double quantum dot turnstile
- Double quantum dot turnstile as an electron spin entangler
- Quasiparticle entanglement: redefinition of the vacuum and reduced density matrix approach
Cited by in corpus (4)
- Current and noise correlations in a double dot Cooper pair beam splitter
- Waiting times of entangled electrons in normal-superconducting junctions
- Elementary Charge Transfer Processes in a Superconductor-Ferromagnet Entangler
- Magnetoresistance and transistor-like behavior of double quantum dots connected to ferromagnetic and superconductor leads